HIGHCVSS 7.0Actively exploited · CISA KEV since 2021-11-03Vulnerability

CVE-2020-1054

Microsoft Win32k contains a privilege escalation vulnerability when the Windows kernel-mode driver fails to properly handle objects in memory. Successful exploitation allows an attacker to execute code in kernel mode.

Properties

Euvd product
Windows 7, Windows Server 2008 Service Pack 2, Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows 10 Version 1803, Windows Server 2019, Windows 10 Version 1709, Windows Server, version 1803 (Server Core Installation), Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2016 (Server Core installation), Windows Server, version 1903 (Server Core installation), Windows 10 Version 1903 for 32-bit Systems, Windows 8.1, Windows 10 Version 1709 for 32-bit Systems, Windows 7 Service Pack 1, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2012 (Server Core installation), Windows Server 2016, Windows 10 Version 1507, Windows 10 Version 1903 for ARM64-based Systems, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server, version 1909 (Server Core installation), Windows Server 2019 (Server Core installation)
Vulnerability name
Microsoft Win32k Privilege Escalation Vulnerability
First seen
2026-10-07T17:30:41+00:00
Cvss score
7
Epss score
0.53878
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-05-03
Euvd assigner
microsoft
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2021-11-03T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2021-11-03
Euvd base score version
3.1
Score
7
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Microsoft
Cvss vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
7

Related Entities (35 · showing 23)

AFFECTS_PRODUCT (32 · showing 20)

→[Product]cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:arm64:*
→[Product]cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*
→[Product]cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x86:*

DESCRIBES (1)

←[KEVEntry]Microsoft Win32k Privilege Escalation Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Out-of-bounds Write

INVOLVES (1)

←[Signal]kev_added · 2021-11-03

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CVE-2020-1054 (CVSS 7) — Ninja Signal Threat Intelligence | Ninja Signal